If youth knew; if age could.

The only person with whom you have to compare ourselves, is that you in the past. And the only per-son better you should be, this is who you are now.

Religion is a system of wishful illusions together with a disavowal of reality, such as we find nowhere else but in a state of blissful hallucinatory confusion. Religion's eleventh commandment is "Thou shalt not question."

In some place in my soul, in a very hidden corner, I am a fanatical Jew. I am very much astonished to discover myself as such in spite of all efforts to be unprejudiced and impartial. What can I do against it at my age?

Opposition is not necessarily enmity; it is merely misused and made an occasion for enmity.

The aim of psychoanalysis is to relieve people of their neurotic unhappiness so that they can be normally unhappy.

I should like to raise the question whether the inevitable stunting of the sense of smell as a result of man's turning away from the earth, and the organic repression of the smell-pleasure produced by it, does not largely share in his predisposition to nervous diseases.